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Micro-masonry for 3D Additive Micromanufacturing

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Published on: August 1, 2014

Multiscale Transfer Printing via Shape Memory Polymer with High Adhesion and Modulus Switchability.

Fu Fan^1,2, Lei Chen^1,2, Yu Zhou^1,2

¹College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, PR China.

ACS Applied Materials & Interfaces

|May 11, 2024

Summary

This summary is machine-generated.

Researchers developed a novel multiscale transfer printing technique using a shape memory polymer (SMP) stamp for flexible electronics. This innovation enables precise fabrication of diverse devices on flexible substrates, advancing wearable technology.

Keywords:

flexible electronics multiscale shape memory polymer switchable adhesion transfer printing

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Area of Science:

Materials Science
Polymer Science
Nanotechnology

Background:

Flexible electronics require advanced fabrication methods for integrating rigid components onto pliable substrates.
Existing transfer printing techniques face challenges in handling diverse materials and achieving multiscale precision.

Purpose of the Study:

To develop a versatile multiscale transfer printing technique for fabricating flexible electronic devices.
To utilize a shape memory polymer (SMP) as a reusable stamp and receiver for enhanced printing capabilities.

Main Methods:

Development of an ultraviolet-curable shape memory polymer (SMP) with tunable mechanical properties.
Implementation of a transfer printing process utilizing the SMP's adhesion switchability and shape recovery.
Demonstration of in situ transfer of various materials and multiscale metallic structures.

Main Results:

The SMP exhibited excellent toughness at room temperature and flexibility near its glass transition temperature.
The technique successfully achieved robust transfer printing of diverse objects and in situ fabrication of multiscale metallic structures.
Transparent hyperthermia patches with embedded metal grids were successfully fabricated for potential applications.

Conclusions:

The developed SMP-based transfer printing technique offers a robust and versatile solution for flexible electronics fabrication.
This method facilitates the integration of diverse electronic components, enabling advanced applications in sensors and wearable devices.
The in situ fabrication capability opens new avenues for creating functional electronic skins and biomedical devices.